Raising/Lowering Periscope

[Lorddreaman]

What I would like to know is if escorts can hear your periscope going up and down?

[GoldenRivet]

no... but they can see it sticking out of the water if you raise it high enough, and they can detect a raised scope with their radar if so equipped.

[U-104]

Would they be able to in real life?:hmm:

[Sailor Steve]

Not that I've ever heard of, or read about.

[GoldenRivet]

some mechanical sounds on board the u-boat could be heard on hydrophones, but the sound of a periscope being raised would be likely bedifficult to hear even if you were standing next to it.

period hydrophones simply were not that great - at least not to the point of being able to hear such a quiet noise.

[Brag]

In GWX escorts are very good at spotting your scope. Both, in game and RL they could not hear it.

[TomcatMVD]

Maybe on a real quiet enviorment and really close to the sub they were able to... I mean, they did not only detect screws, that's why the captain would demand silence on the boat. Anyways, I think such sounds were only taken seriously if heard several times in repetition and roughly at the sime bearing, so as to dismiss any casual weird "natural" sound.

[Konovalov]

some mechanical sounds on board the u-boat could be heard on hydrophones, but the sound of a periscope being raised would be likely bedifficult to hear even if you were standing next to it.

period hydrophones simply were not that great - at least not to the point of being able to hear such a quiet noise.

In the book Iron Coffins, the author Werner describes as follows, 'The periscope motor hummed continually'. I am guessing that this sounds could be heard from within the control room or from within the conning tower above. I would go along with the general concensus here that ths sound of a periscope being raised/lowered would not be picked up by a sonar operator on a surface vessel.